A client of yours purchased a commercial property recently. Two weeks after taking occupation of the building, your client received a letter from the local authority indicating that the car ports on the property were illegal structures as a building plan had never been submitted to the local authority indicating that the car ports were to be erected. In addition, the letter from the local authority also indicated that an extension that had been added to the ground floor ten years prior was also illegal as a building plan had also never been submitted and approved by the local authority. Your client discussed the matter with the seller of the building and the seller told your client, that the illegal extension that the local authority referred to was undertaken by the original owner of the building who had initially erected the building. The seller, had however, erected the car ports on the property. Your client also tells you that he had not requested a building plan from the seller during the negotiations preceding the conclusion of the sale. Your client now requests your advice as to how to respond to the local authority and the seller.